I wanted to resurrect an older thread regarding the Loop Free Alternates feature now available in Junos for OSPF and IS-IS.

http://www.mail-archive.com/[email protected]/msg09719.html

I am wondering if anyone has any pointers regarding what type of topologies do not work so well and why.

I am running LFA in an environment where I know that I have multiple paths existing to where I need it, but unfortunately, I am not getting the type of backup coverage that I would like.

For example, certain types of square topologies do not work well for some reason, but I am wondering if making link cost changes could rectify this problem.

Clarke Morledge
College of William and Mary
Information Technology - Network Engineering
Jones Hall (Room 18)
Williamsburg VA 23187
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